I was taught to always treat every fire arm as loaded

 This teaching started in summer camp (riflery was taught in those days) when I was 11 years old.  This teaching continued up thru my Air Force years.  When picking up a gun the first thing you do is make sure it is unloaded.  This includes opening the chamber to make sure there is no round lurking there in.  Another basic gun safety rule is "Never point a gun at anything you don't intend to kill".    The recent tragic accident of Alex Baldwin and a "prop" gun indicates Alex Baldwin has not been properly trained in gun safety.  Had either rule been followed this killing would not have happened.  Surely Alex did not intend to kill his cameraman (woman). I feel sorry for his victims and for Alex.